keysbe



(No Model.) v

. J. H. KEYSER.

GAS HEATING AND COOKING STOVE.

No. 276,049. Patented Apr. 17,1883.

776fi 5'6 9/ I 171225112 0 21 N. vni zns. mmuu n m, wnhin mmpc.

UNITED STATES PATENT OFFIC JOHN H. KEYSEB, OF NEXV YORK, N. Y.

GAS HEATING AND COOKlNG STOVE.

SPECIFICATION formingpart of Letters Patent No. 276,049, dated April 17,1883.

Application filed January 6, 1883.

To all whom it may concern:

Be it known that I, JOHN H. KEYSER, a citizen of the United States,residing in the city, county, and State of New York, have invented a newand useful Improvement in Gas Heating and Cooking Stoves, of which thefollowing is a specification.

My invention relates to a gas-stove which is intended to confine all ofthe heat arising from the burning gas, and which compels it to spend allof its force by radiation, absorption, and a downward circulation in thesame chamber in which itis first discharged from the gas-burner, theonly provision for its escape being the open bottom of the chamber andthe open bottom of the base upon which the chamber rests, and such anescape, if it occurs, being caused by a reverberation of the heat afterit has passed to the closed top of the chamber and against the closedside wall of the same.

My invention consists First. In the combination, with the cylinderhaving a door extended down to its lower edge, and which is made withoutdiving-fines, and which confines the whole heat from the gasburner andreverberates it all upon articles being heated or cooked within thecylinder, of a gas-burner applied centrally of the cylinder, andentirely below said cylinder and its door, and provided with aninduction-pipe, which is an extension of the head of the burner. By thiscombination the whole length and capacity of the chamber is utilized asa heat accumulat ing and reverberatin g chamber, and also as a chamberin which vessels or pans may be placed upon supports entirely above thegas-flame, but into which the said flame circulates.

Second. it consists in an adjustable air-admission thimble or ferrule atthe outer end of the gas-burner induction-pipe, said ferrule bein gprovided with an air-passage, and attached to the end of thegas-servicepipe,and the same serving to admit such quantity of air,along with the gas, on the passage of the same to the burner, as thenature or quality of the gas flowing through the pipe may demand.

Third. It consists in the combination, with a base-support of agas-stove provided with a cross-bar, of a gas-burner and head having anextension induction-pipe and a pivot screwbolt and nut, whereby theburner can be sus- (No model.)

provided with draft-tines or outlets at any point, and the only escapefrom it will be at its lower end. In this chamber a door,B, having micain it, is provided, and this door will extend from near the top to theextreme lower edge of the cylinder, as shown.

A represents a base-ring or other suitable support for the cylinder, andwhen the cylinder is placed upon this ring a circular ledge, a, will beformed by the support all around the inside of the cylindrical chamber,at a point above that where the gas-burner G terminates. Across theledge a, belowits top, a bar, (I, is provided, and 'to this bar thegas-burner C, gas-burner head H, and gas-induction pipe H are suspendedby means of a pivot clampingbolt, 12, as shown. The burner 0, head H,and pipe H are cast together, and in the burner, which is cylindrical,fine reticulations or gagewire outlets for escape of the gas whileburning are provided. The induction-pipe passes from the head throughthe base-support A, as shown.

From an inspection of the drawings it'will be seen that the gas-burneris entirely below the cylinder A, and that as the door B extends down tothe bottom edge of the cylinder A vessels, pans, or other utensils canbe placed through the door into the cylinder or chamber, close to thegas-burner flame, without resting upon the burner. If desired, a bar orgrating can be placed upon the ledge a and these vessels set upon thebar or grating; but instead of this, the vessels may rest upon thecrossbar d, as found best. Thus it will be seen that the whole lengthand capacity of the cylinder is utilized as a heat-in g or a cookingchamber. Besides this, all the highly-inflamed products of combustionpass up to the top of the chamher and accumulate until by areverberatory action. they descend to the lower part of the cylinder,and if all their heat is not absorbed or radiated they will pass outunder the lower edge of the cylinder. This construction of stove gives apowerful heat from a small consumption of gas, and it affords greatcapacity for cooking purposes, and at the same time answers as anilluminator through its mica door B, which answers as a means of accessfor lighting the burner, as well as for the purposes before mentioned.

To the gas-induction pipe H of the burner an adj ustable ferrule or thimble, 1), is attached, and this thimble connects the said pipe with theservice-pipe F, as shown. In the thimble or ferrule, on one side, a holeor air-passage, E, is provided for the admission of air into theinduction-pipe H, along with the gas which is flowing from theservicepipe into said induction-pipe, and from thence into theburner-head. The shape of the outer end of the induction-pipe, as shown,is such that air has freedom to flow into said pipe when the hole in theferrule or thimble is opened to a greater or less extent,but nototherwise. The object of this ferrule or thimble is to enable the userof the stove, by sliding it over the end of the pipe H, to so adjust thesize of the air-passage that just the quantity of air required shall beadmitted into the burner-head and to the burner, along with the gas, andby this means he is enabled to measure and regulate the amount of airnecessary, according to the pressure or quality of the gas from thegasometer. Thisdeviceformsanimportantimprovement in the construction ofgas-burners.

Anotherimportantimprovementis the crossbar (I and the pivot-bolt appliedbelow the cylinder A, by which the burner is suspended, for with thiscontrivance the burner may be set with its induction-pipe atanyconvenient angle for connection with the gas-service pipe and then bereadily clamped in position, while the bar will answer, also, forsupporting cooking utensils.

What I claim as my invention, and desire to secure by Letters Patent,is-- l. The combination, with the cylinder A, which has a door, B,extended down to its lower edge, and which confines the heat from thegas-burner and reverberates the whole upon articles being heated orcooked within the chamber, of a gas-burner applied centrally of thecylinder, and entirely below said cylinder and door, and provided withan inductionpipe which is an extension of the head of the burner,substantially as and for the purpose described.

2. The adjustable thimble or ferrule D at the outer end of theinduction-pipe of the burner, provided with an air-passage, E, andconnected with the service-pipe F, whereby theproper proportionateamount ofa-ir to be admittedand mixed with the gas, in its passage tothe burner, can be regulated, substantially as described.

3. The combination of the base-support A, provided withthe cross-bar d,the cylinder A, applied above the base, the burner G, with its head H,and induction-pipe H, and the pivot clamping-bolt I), substantially asand for the purpose described.

JOHN H. KEYSER.

iVitnesses FRANK HORTON, WILLIAM PALEY..

